Paper-cutting machine



Jan. 28, 1 930. A, w w s 1,744,818

PAPER CUTTING MACHINE Filed 00x. 8, 1928 s Sheets-Sheet 1 r I v I I WITNESSES .4 7% figg fseiz h I BY M I I I AITYTORNEY Jan. 28, 1930. A. w. WARSEN 4, v

PAPER curmm mourns Filed 001;. 1928 3 Sheets-Sheet 3 WITNESSES 0 "WENT 2,42% WI;

3 I ATTORNEY Patented Jan. 28 1930 PATENT OFFICE AUGUST W. WARSEN, 0F BROOKLYN, YORK PAPER-CUTTING MACHINE Application filed October 8. 1928. Seria1No. 311,122.

This invention relates to paper cutting machines, and particularly to an improved con struction of cutting sand paper, the object being to provide a construction wherein the paper may be continuously fed into the ma chine and a knife is used which cuts by a movement which is in a direction substantially at right angles to the movement of the paper.

Another object of the invention is to provide a machine for cutting paper, wherein a shearing action is produced with the movement of the shearing members but in a direc tion at substantially right angles to the movement of the paper with means for quickly moving part of the cutting means away from the paper immediately after the cutting operation, so that a new supply of paper may be fed into position.

A still further object of the invention is to provide a paper cutter, wherein one of the cutting elements reciprocates and also swings, the movement being such that the cutter quickly gets out of the way after the cutting operation and then more slowly resumes the cutting position ready for the next operation.

In the accompanying drawings,-

Figure 1 is a longitudinal vertical sectional view through Figure 2 on the line 11;

Figure 2 is a front view of a paper cutting machine disclosing an embodiment of the invention;

Figure 3 is a fragmentary view partly in section showing the upper part of the machine illustrated in Figure 1 but with the cutter in operated position;

Figure 4c is a view similar to Figure .3 but showing the cutter immediately after the trip has been released;

Figure 5 is a plan view of the cutter and cutter frame shown in Figure 4.

Referring to the accompanying drawings by numerals, 1 indicates a frame of a suitable kind having suitable uprights and suitable braces. Arranged on this frame is a drum 2 driven by any suitable means, as, for instance, a belt 3 which is driven from any suitable source of power. The guiding and clamping roller 4 coacts with roller 2 for guiding the paper 5 to the stationary cutter 6. The cutter 6 is known as a stationary cutter but is actually adjustable through the action of the screw 7 and the wheel 8. The screw 7 extends through the extension 9 projecting from the cutter 6. Screw 7 is suitably mounted in frame 1 so that upon rotation of wheel 8 in one direction the cutter will be moved in one direction andwill be moved in the opposite direction by reverse rotation of the wheel.

' The paper 5 may be any kind of paper but the machine is particularly adapted for cutting sand paper which is continuously fed into the machine by the drum 2. By reason of the continuous movement of the paper it is necessary that the movable cutter 10 shall 7 quickly move out of the way upon the completion of the cutting operation, and, in fact, the cutting operation must be done quickly so as to prevent unnecessary bulging of the paper between the cutter 6 and roller or drum 2.

In order to accomplish this result means have been provided for causing a 'comparatively quick cutting action and then a very quick swinging action for the cutter 10, so that after the cutting operation the parts are quickly swung to one side, as shown in Figure 1, and are then raised more slowly ready for a second operation.

The cutter 10 is secured to a reciprocating frame 11 which is made up of bars 12 and 13 anda connecting bar 14. Journal extensions 15 and 16 are provided opposite the bar 14, said extensions receiving the lower ends of the respective links 17 and 18. These links are connected to the respective disks 19 by suitable wrist pins 20 and disks 19 are connected together by shaft 21 and are driven by means hereinafter fully described. It will, therefore, be seen that as the shaft 21 rotates the frame 11 will be moved upwardly and downwardly. At the same time that this frame moves upwardly and downwardly it is adapted to swing by reason of the swinging frame 22. This swinging frame is journaled on the frame 1 through journal members 23 and 24.

This frame may be of any desired material, as for instance, channel irons andprovided with guiding members 25, 26, through which the respective bars 12 and 13 slide. Also, a racket :27 is rigidly secured to the frame said bracket having an aperture 28 through which the link 29 slides. Link 29 is provided with stops 30 and 31 and is surrounded by the respective springs 32 and 33.

These springs are positioned on the opposite sides of the bracket 27, so that when the disk 34 moves rod 29 in one direction one spring will be compressed and when the disk 34 moves rod 29 in the opposite direction the opposite spring will be compressed. Disk 34 is carried by shaft 35 which is supported by suitable bracket 86 carried by frame 1. Shaft is journaled in the frame 1 and carries a sprocket wheel 37 which is operated by chain 38 receiving power from any suitable source, as, for instance, sprocket wheel 40.

By reason of this construction whenever chain belt 41 functions sprocket wheel 42 will be rotated and as this wheel is rigidly secured to shaft 21, said shaft 35 will function, and consequently, rod 29 will be moved back and forth and the respective links 17 and 18 will be raised and lowered. As shown in Figure 3, the movable cutter 10 is almost at the end of its cutting stroke. After the cutter 10 moves a short distance beyond the position shown in Figure 3 the projection 46 (Figure will strike the trip arm 47 of trip 48.

Trip 48 is pivotally mounted on a suitable pin or shaft 49, so that when the trip arm 47 is moved downwardly the trip catch will be moved downwardly and out of contact with frame 22. This will release the frame and as the spring 32 is compressed (Figure 3) frame and parts carried thereby will be quickly swung to the position shown in F igure 4.

During this swinging motion and immediately thereafter the links 17 and 18 function to gradually raise the cutter and associated parts and by the time the cutter is raised rod Q!) will have started on its return movement and spring 33 will be slightly under com- PIG/851011, so that the frame 22 will be swung back to the position shown in Figure 1 and extension 46 will strike the trip restoring arm 51 and move the trip back to its first position. Rod 29 and the other parts will continue to function so that spring 33 will be brought under tension, as shown in Figure 1.

This tension is gradually relieved as the rod 29 moves back to the position shown in Figure 3 and this movement causes the spring 32 to be again brought under tension and ready to automatically and quickly swing the cutter 10 and associated parts out of the way of the paper as soon as the trip 48 has been caused to function. In this way the movable cutter is quickly moved out of the way of the paper after each cutting operation. whereby the paper may be continuously fed into the machine without danger of crumpiing or clogging the machine.

The various parts are, of course, properly timed and preferably the belt 3 and the shaft 21 are driven from the same source of power so as to operate in proper time, whereby the proper length of paper will be fed in for each operation of the mo able cutter 10. The paper 5 may be of any width, and if desired, may be slitted before it reaches the cutter 6. The space immediately beyond the cutter 6 is open, so that as soon as a section of paper has been cut 011' it will drop downwardly under the action of gravity, so that neither the paper nor the cutter 10 will be in the way of the continuous movement of the strip of pa per 5.

What- I claim l. A paper cutting machine, including a frame, feeding rollers for feeding paper into the frame, a stationary cutter positioned so that the paper will move thereover, a movable cutter coacting with the stationary cutter for cutting the paper into lengths, and poweractuated means for actuating the cutter, a trip for normally holding said cutter against swinging, said trip being movable to a tripped position by said movable cutter for releasing the cutter immediately after the cutting operation, so that the cutter may swing away from the stationary cutter and spring means for swinging the movable cutter to one side immediately upon release.

2. A cutting machine for cutting sand paper, including feeding rollers for feeding a continuous strip of sand paper, a stationary cutter positioned so that the paper will pass thereover, a movable cutter coacting with the stationary cutter, a reciprocating frame carrying said movable cutter, a swinging frame carrying said reciprocating frame, swinging means for swinging said frame, said swinging means including a pair of springs and a trip for normally holding said swinging frame in a predetermined position, said trip being movable to a tripped position by said movable cutter as the same completes a cutting stroke and moved back to a set position by the movable cutter when the movable cutter moves to its starting point.

3. A paper cutting machine, including a stationary cutter, means for feeding paper over the stationary cutter, a reciprocating cutter coacting with the stationary cutter, a swinging frame supporting the reciproeating cutter, said frame ha ing an aperture, a reciprocating rod extending through said aperture, a spring on each side of said frame surrounding said rod, a pair of stops coacting with said springs, whereby when the rod i moved in one direction one of the springs will be compressed for moving the swinging frame in one direction and when the rod is moved in the opposite direction the opposite spring will be compressed for swinging the swinging frame in the opposite direction, and means for reciprocating said rod in time with the movement of the movable cutter.

4:. A. paper cutting machine, including a stationary cutter, means for feeding paper to be cut over the stationary cutter, a reciprocating and swinging cutter, a reciprocating frame carrying said last-mentioned cutter, a swinging frame carrying said reciprocating frame, a pair of springs for swinging said swinging frame, a catch for locking the frame in,a predetermined position when the lastmentioned cutter functions, and means for actuating said springs to cause the same to function at the proper time.

5. A paper cutting machine, including a stationary cutter, means for feeding paper to the cutter over the stationary cutter, a movable cutter coacting with the stationary cutter, a swinging frame, a reciprocating frame carried by the swinging frame, said movable cutter being connected with the reciprocating frame, a pair of links for actuating said reciprocating frame regardless of the position thereof, a pair of oppositely actuated springs for swinging said swinging frame, a power rod for bringing said springs under compression, means for actuating said power rod in time with the paper feeding means, and a catch acting to hold the swinging frame in a predetermined position when the cutters are functioning.

6. A paper cutting machine, including a stationary cutter, means for feeding paper over the stationary cutter, a reciprocating and swinging cutter coacting with the stationary cutter, a swinging frame carrying the second-mentioned cutter, and a trip for holding said swinging frame in a predetermined position when the cutters are functioning, said trip including a catch adapted to engage said swinging frame, a trip restoring arm actuated by the swinging and reciprocating cutter for moving the catch to an operated position, and a trip arm actuated by the swinging and reciprocating cutter for moving the trip so that the catch will be swung to an inoperative position.

AUGUST W. WARSEN. 

